The Hopetoun Landcare Group covers an area of approximately 42,200 hectares at the end of the Yarriambiack Creek system. Control and eradication of pest plant and animals is a major priority for the Hopetoun Landcare Group since 2005. The group has coordinated a local ongoing rabbit ripping program and administered a Silverleaf Nightshade weed eradication program targeting whole Mallee region. They also established the Hopetoun Landcare Delivery Site to monitor and research land use practices and salinity mitigation.